Penapisan Isyarat Berderau Acak dengan Tapis Adaptif yang Berbasiskan FFT  

Oleh:

Sumarno, Linggo

Jenis: Article from Journal - ilmiah nasional - tidak terakreditasi DIKTI
Dalam koleksi: SIGMA: Jurnal Sains dan teknologi vol. 1 no. 2 (Jul. 1998), page 27-39.
Topik: Frequency Domain; Adaptive Filter; Random Noise Filter

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: SS25.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

In a signal transmission through a medium, additional unwanted signals such as random noise contaminated with the transmitted signal are frequently encountered. If the random noise contents are small, the transmitted signal can be identified easily. However, if they are quite big, the transmitted signal will be very difficult to identify. To overcome this problem, two kinds of random noise filter using Fast Fourier Transform (FFT), which perform processing in the frequency domain, have been designed. The first one is a filter with filter-parameter varying according to the peak of the original signal detected in the frequency domain, whereas the second one is a filter with filter-parameter varying according to the peak of random noise in the frequency domain. A Simulation of the above filters has been carried out. It is shown that a badly contaminated signal with random noise can be recovered, so that the original signal can be identified.

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